Meteorologists say the United States is getting hit by almost every kind of extreme weather at once, as spring air masses collide and the jet stream twists.

Add Yahoo as a preferred source to see more of our stories on Google. A split jet stream over the Pacific Ocean will help amplify a ridge of high pressure near the West coast, keeping California warm ...

Temperatures that broke a high record were followed by a blizzard warning. It's a good example of volatile spring weather, a meteorologist said.

Add Yahoo as a preferred source to see more of our stories on Google. At the same time, every hurricane that formed, including the three powerful Category 5 storms, steered clear of the U.S. mainland.

First, instead of moving storms quickly eastward, the sluggish jet stream stalled storm systems in place, causing prolonged downpours and flash flooding. When you purchase through links on our site, ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) At the same time, every hurricane that formed, including the three powerful Category 5 ...